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I have a Sager D8P laptop, For some reason I cannot get the laptop to turn on. It has a new power supply and when I press the power button, it makes noise like it is turning on, but nothing appears on the screen. Any idea?

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  • brunhold Nov 17, 2008

    hi,

    thanks answer.

    This laptop has no battery that I can try out. When turn on, fan works, lights on and NO screen.
    Screen not turned down.
    Ac adapter has been changed (no idea why) and seams like AC adapter work ok.
    Thanks


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2 Answers

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  • 395 Answers

The video card may have went out.The screen itself rarely goes out.its either videocard,video inverter or a loose video cable.The D8P has a tendency to overheat when the cooling fan is either not working or is blocked or dirty.Try unplugging the video cable with it powered off,then plug it back in.Maybe you will get lucky and it will work.If not i would say the videocard is damaged.

Posted on Jul 27, 2009

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By power supply, do you mean a new battery or a new AC adapter? When the noise comes, are the status lights on on the laptop, battery and ac adapter?
Plus: check the lcd settings---is it turned all the way down? This could be the easy solution.


Posted on Nov 17, 2008

  • zabrina liang Nov 18, 2008

    I think what you are trying to tell me is that the screen is blank, and not showing a thing because you say the AC Adapter works. In which case, you will have to get the screen repaired. Anything else I can help you with?

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1 Answer

Red hard drive light and fan continuously running


Let's diagnose from your statements;

A) No display on monitor

B) Harddrive activity LED is on

C) Fan keeps running. Assume your reference is to the computer case fan. IMHO if it was a reference to the Processor fan, you would have stated so.

D) Power Supply changed. Assumption is that it is KNOWN to be good......

A1) Following a diagnostic flowchart, you would rule out the possibilities of a problem, one by one, and step by step.

No display on the monitor can mean a lot of things, however with the additional information we can narrow it down further....

B1) The Harddrive activity LED is on. The way you made the statement, makes me think you are referring to it is CONSTANTLY on.

Reason?
Harddrive is in an endless loop. BIOS is trying to find the Boot record on the Harddrive.
However for some reason it isn't finding it.

C1) Fan keeps running....
This leads me more to believe the reference is now, to the Processor Fan.
Processor fan running at high speed.

D1) When someone states they 'Changed' the Power Supply, instead of Replaced the Power Supply, this leads me to believe the reference is to another Power Supply that was laying around, and not a new Power Supply.

Therefore makes me want to ask;
"How do you know the Power Supply is indeed good?
All 3 main voltage power rails are good?
3.3 Volt, 5 Volt, and 12 Volt? (DC)"

A Power Supply with a weak voltage power rail, will show the symptoms you are seeing.
Why?

1) If ALL of the LED's (Light Emitting Diode) were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use 51 to 130 Watts of power.
Just depends on what Processor it is.

No Processor running, no 'Brain'
No 'Brain' running, no computer.

You press the Power On button. This plastic assembly then presses against a Power On switch, located inside it.

The Soft Power On circuit is activated. This 'excites' the Power Supply, and turns it on.
The first chipset to receive power is the BIOS chipset.
The Basic Input/Output System program is initialized.

BIOS looks to see what devices are connected, does a Ram Memory count, TURNS THE PROCESSOR ON, and hands the computer over to the Operating System.
(In this case the O/S is some version of Windows)

Processor is NOT turning on. No 'brain' operating to find the Boot record on the Harddrive.
Harddrive spins in an endless loop.

Power Supply is KNOWN to be good? Came out of a working computer?
Power Supply is a new one?
Still doesn't mean it is good. Test the 3 main voltage power rails, with a multimeter.

Assuming the Power Supply IS indeed good......

Clean out the inside of the computer.
Replace the Thermal Paste on the Processor (CPU)
Make SURE you are following Anti-Static Procedures.
[The CPU (Processor) is the MOST susceptible hardware component to Static shock ]

However, after replacing the Thermal Paste, do not plug the Power Supply into power.

Press the Power On button in, and hold in for a count of 10 seconds.
Let go.
Do this procedure 2 more times.
What you are doing is clearing CMOS Error Codes, and resetting BIOS Setup back to the factory default settings.
The former matters, not the latter. Just telling you the 'whole story'.

NOW plug the Power Supply into power. WAIT 1 minute, turn the computer on.

Post back in a Comment with the results. Or click on Reply at end of solution, and post results.

Need guidance in replacing the Thermal Paste on the Processor (CPU)?
Post the computer manufacturer name, and model number.
The Model Number can be found on the Back of the computer, or up on the side of the computer tower.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3071621&CatId=503

http://www.hardwaresecrets.com/article/274

Regards,
joecoolvette

May 14, 2013 | PC Desktops

1 Answer

When cpu turn on power supply goes off pls. tell me solution........


Maybe your power supply is bad and needs to be replaced. I've seen them have enough power to make the lights turn on, but not enough power to start the fans or hard drive to spinning.

Do you hear thefan come on? Do you hear the hard drive spinning? If not your power supply might be bad.

When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

May 23, 2012 | Compaq PC Desktops

1 Answer

Lx6810 blinking power light


Whenyou plug in the power cord is there any lights whatsoever on the laptop, wherethe plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous. Most times the problemis with the memory or Video Card. Count the Blinking Lights or Beeps and takenote of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Pressand Hold the power button for 30 seconds. After 30 seconds plug the powercord back in and hit the power button to see if it boots. Maybeyour memory is bad or the memory slot is bad.Removethe Power Cord, Open the Case and remove one of the memory chips. Set thechip aside then try rebooting the computer. If it boots, then you knowthe memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and tryrebooting. If it fails take the chip out and set it aside, then put theother chip in and try booting it in both slots. If it boots, just toverify that the chip set aside is bad, mark an x on it and put it into the openmemory chip slot and try booting.
Maybe your power supply is bad. Sometimes there is enough power to make the power light come on but not enough power to make the fan turn on or hard drive spin.

May 10, 2012 | Gateway LX6810-01 PC Desktop

1 Answer

Sony PCV RZ44G irresponsive


Remove the Power Cord, Open the Case and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.Just because you see lights around the power button does not mean that the Power Supply is ok. I've seen many times when the Power Supply makes the light around the power button come on and makes the light on the motherboard come on, but it does not have enough power to make the Fan inside the power supply come on or anything else.

Apr 22, 2012 | Sony VAIO PCV-RZ44 (PCV-RZ44G) PC Desktop

1 Answer

Hi i have an r630 desktop and it did work but now i have no power to motherboard no fans cpu but i do have power to the hard drives and rom replaced power supply same problem


Maybe your motherboard is toast.

When you plug in the power cord is there any lightswhatsoever on the laptop, where the plug goes in or on the AC Adapter of thepower cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button. And if that's true maybe you wasoperating off the battery the last time you had it on and since the power cordis bad, it was not charging the battery so the battery is drained and the powercord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove theBattery, then Press and Hold the power button for 30seconds. After 30 seconds plug the power cord back in (leave the batteryout) and hit the power button to see if it boots. If it does, you can putthe battery back in and let it charge.

Mar 30, 2012 | PC Desktops

1 Answer

No power to my desktop computer HP A1330N and no green light in the back of the power supply


You replaced power supply and your made sure you plugged everything back into the motherboard snuggly and in it's proper place? If so it might be your motherboard is bad.

Make sure you have the new power supply turned on. Sometimes there's a O/I switch on the back of the power supply. Flip it and try to boot and see what happens. You might have another bad power supply.
If so your motherboard might be burning them out.

Try removing the power cord for 30 seconds and press and hold the power button. After 30 seconds put the power cord back in and press the power button to see what happens.

Do your fans work when you press the power button? Do you hear any fans running?

Mar 23, 2012 | PC Desktops

2 Answers

How can i reboot my PC without keyboard?


Hi,

Here are some of the steps to you can reboot your pc without using a keyboard:

1) Long press the power button
- Press the power button for about 3-5 seconds. If the power LED or power supply fan shuts off, that means you have successfully turn off your pc. Press it again to turn on.

2) Unplug the power cord from the power supply
- Force your pc to shutdown by unplugging the power cord from the power supply of your pc. Put it back again and press power button to turn on.

Note: Please make sure you have saved important activities before doing this as this will immediately turn off your pc.

Hope it helps.

Thanks!

Feb 22, 2011 | PC Desktops

1 Answer

No power


Try these simple steps that I have below:

  1. Believe it or not, the number one reason why a computer won't turn on is because it wasn't turned on!
  2. Before starting a sometimes time consuming troubleshooting process, make sure you've turned on every power switch and power button on your computer:
  3. Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on at all.
  4. Check for disconnected computer power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.
  5. Perform a "lamp test" to verify power is being provided from the wall. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.
  6. Test your power supply. At this point in your troubleshooting, it's very likely that the power supply unit in your computer is no longer working and should be replaced. You should however test it just to be sure. There's no reason to replace a working piece of hardware when testing it is fairly easy.

Sep 16, 2010 | Dell Dimension 2350 PC Desktop

3 Answers

Pc will not come on no power , have checked power outlet, as well as power cable, to no avail ...........still will not come on


Have you checked the toggle switch on the back of the power supply? Make sure it is turned to the correct voltage (110 in the US). Still no power? Check the connection on the motherboard. Make sure the power supply lead from the front panel switch to the motherboard is connected. Then check all power connections to the motherboard. Secure or correct as needed. (follow the motherboard manual's diagram as to where each lead should go)

Jan 01, 2010 | E-Machines eMachines Desktop PC

2 Answers

Sager 8500v laptop wont load xp


Hi,

It depends on the XP version. You can try loading the basic XP 2002 version.

Regards,
HP

Aug 28, 2009 | E-Machines eMachines Desktop PC

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